CIESC Journal ›› 2014, Vol. 65 ›› Issue (3): 954-959.DOI: 10.3969/j.issn.0438-1157.2014.03.027

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Analysis of fouling resistance of PAA-g-ZrO2 composite membrane in filtrating BSA solution

ZHOU Shouyong1, ZHANG Yan1, XUE Ailian1, WANG Hui1,2, LI Meisheng1, ZHAO Yijiang1, XING Weihong2   

  1. 1 Huai'an Key Laboratory of Advanced Environment Functional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, Jiangsu, China;
    2 State Key Laboratory of Materials-Oriented Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu, China
  • Received:2013-06-23 Revised:2013-11-16 Online:2014-03-05 Published:2014-03-05
  • Supported by:

    supported by the National Natural Science Foundation of China (20976067), the Natural Science Foundation of Jiangsu Education Department (12KJD530001), the Jiangsu Province Science and Technology Support Program (BE2013080), the Open Project Program of Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials (JSKC12115), the Jiangsu Qing Lan Project, the Six Projects Sponsoring Talent Summits of Jiangsu Province and the Jiangsu Government Scholarship for Overseas Studies.

PAA-g-ZrO2复合膜过滤牛血清蛋白过程的污染阻力分析

周守勇1, 张艳1, 薛爱莲1, 王辉1,2, 李梅生1, 赵宜江1, 邢卫红2   

  1. 1 淮阴师范学院化学化工学院, 淮安市新型环境功能材料重点实验室, 江苏 淮安 223300;
    2 南京工业大学化学化工学院, 材料化学工程国家重点实验室, 江苏 南京 210009
  • 通讯作者: 赵宜江
  • 作者简介:周守勇(1973—),男,博士,副教授。
  • 基金资助:

    国家自然科学基金项目(20976067);江苏省高校自然科学研究项目(12KJD530001);江苏省科技支撑计划(工业)项目(BE2013080);江苏省低维材料化学重点建设实验室开放课题(JSKC12115);江苏省高校“青蓝工程”资助项目;江苏省六大人才高峰项目;江苏省政府留学基金项目。

Abstract: Fouling of PAA-g-ZrO2 composite membrane by BSA solution was investigated in conjunction with analysis of membrane total resistances and resistances distribution. The total resistances of the PAA-g-ZrO2 composite membrane and ZrO2 membrane increased with increasing filtration time, but the growth trend of the PAA-g-ZrO2 composite membrane total resistances was lower than that of the ZrO2 membrane. The fouling resistance of the ZrO2 membrane was Rcp (concentration polarization resistance)-dominant, while Rcp and Rm (membrane resistance) controlled the PAA-g-ZrO2 composite membrane separation process. The internal plugging resistance (Rif) of the PAA-g-ZrO2 composite membrane was just half of that of the ZrO2 membrane. The membrane resistance of PAA-g-ZrO2 composite membrane increased with increasing pH. The densely packed brush-shaped structure of the PAA chains was considered to be responsible for reducing the protein adsorption on the membrane surface. Furthermore, the PAA-g-ZrO2 composite membrane displayed high pH-sensitivity for BSA solutions, and could resist protein fouling in high pH applications.

Key words: membranes, filtration, fouling, protein, acrylic acid, pH-sensitivity, membrane resistance

摘要: 通过对PAA-g-ZrO2复合膜过滤牛血清蛋白过程的污染阻力及其分布分析揭示接枝聚丙烯酸(PAA)对ZrO2膜抗污染性能的影响规律。结果表明:PAA-g-ZrO2复合膜和ZrO2膜的总阻力均随着过滤时间的延长而增加,但是PAA-g-ZrO2复合膜总阻力的增加趋势明显低于原ZrO2膜,同时,PAA-g-ZrO2复合膜的内部污染阻力Rif所占比例下降为原ZrO2膜的一半,这表明PAA接枝到ZrO2膜表面明显降低了膜孔内堵塞的内部污染,提高了膜的抗污染和易清洗性能。此外,溶液的pH值对PAA-g-ZrO2复合膜的污染阻力及其分布有着明显影响,当溶液pH值为8.0时,PAA-g-ZrO2复合膜几乎不存在膜孔堵塞污染。

关键词: 膜, 过滤, 膜污染, 蛋白质, 丙烯酸, pH敏感, 膜阻力

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